adidas UltraBoost 21 - White/Black - UK 8.5
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Product Information
Full details
For adult athletes seeking a blend of ultimate comfort and responsive performance, the adidas UltraBoost 21 'Oreo' trainers offer exceptional energy return and support for daily runs and intense training. While providing a stylish, iconic look, users should be aware that the fit may be snug for wider feet. These unisex trainers feature the renowned Ultraboost cushioning, a durable rubber outsole, and a Primeknit upper for a sock-like fit.
All features
| Age Group | adult |
|---|---|
| Colour | White |
| Gender | Unisex |
| Shoe Size UK | 8.5 |
| Accent Colour | Black |
| Shoe Type | Trainers |
| Series | Ultraboost 21 |
| Model Part Number | S23708-85 |
| Brand | adidas |
Extended Product Information
FAQs
Are the adidas UltraBoost 21 suitable for wide feet?
The Primeknit upper is designed to be adaptive, but some users with wider feet may find them snug. It's recommended to try them on if possible or consider the fit of previous UltraBoost models you may have owned.
What is the main benefit of the Ultraboost cushioning?
The Ultraboost cushioning provides exceptional energy return, meaning it absorbs impact and converts it into forward momentum, offering a responsive and comfortable feel with every step.
How often should I clean my UltraBoost 21 trainers?
It's recommended to clean your trainers as needed, especially after dirty runs. Regular spot cleaning with a damp cloth will help maintain their appearance and the integrity of the materials.
Can I wash these trainers in a washing machine?
No, it is not recommended to machine wash or tumble dry these trainers. Hand washing with mild soap and water and air drying is the best method for care.
What is the 'Oreo' colorway?
The 'Oreo' colorway refers to the specific black and white color scheme of these trainers, reminiscent of the popular cookie.
Are these trainers good for marathon running?
Yes, the high level of cushioning and energy return makes the UltraBoost 21 a popular choice for marathon runners seeking comfort and performance over long distances.
What is the expected lifespan of these trainers?
The lifespan varies depending on usage frequency, running surface, and individual biomechanics. However, for optimal performance, many runners replace their trainers after 300-500 miles.
Troubleshooting
Shoes feel too tight
Ensure you have the correct size. If the Primeknit upper is slightly snug, try wearing thinner socks or stretching the shoes gently during wear.
Reduced cushioning effect over time
The BOOST foam is highly durable, but if the cushioning feels reduced, ensure the shoes are clean and free from debris. For persistent issues, consider if the shoes have reached the end of their lifespan for optimal performance.
Traction issues on wet surfaces
While the rubber outsole provides good traction, performance on extremely wet or slick surfaces may be reduced. Clean the outsole regularly to remove any caked-on dirt that could impede grip.
Pros and Cons
Pros
- Exceptional comfort and energy return from Ultraboost cushioning.
- Breathable and adaptive Primeknit upper provides a secure fit.
- Durable outsole offers good traction and longevity.
- Stylish 'Oreo' design is versatile for athletic and casual wear.
- Supportive structure enhances stability during runs.
Cons
- May feel snug for individuals with wider feet.
- Primarily designed for running; may not be ideal for all sports.
- The white color can be prone to showing dirt.
Setup, Compatibility & Care
Setup: These trainers require no specific setup. Simply ensure you have the correct size for a comfortable fit.
Compatibility: Designed for running and general athletic activities. They are compatible with most athletic socks. For optimal performance, consider pairing with moisture-wicking running socks.
Care Instructions:
- Cleaning the Upper: Use a soft brush or cloth with a mild soap and cool water to gently clean the Primeknit upper. Avoid harsh detergents.
- Cleaning the Midsole/Outsole: Wipe down the midsole and outsole with a damp cloth. Stubborn dirt can be removed with a mixture of soap and water.
- Laces: Remove laces and hand wash them separately with mild soap.
- Drying: Allow the shoes to air dry naturally at room temperature. Do not place them in a washing machine or dryer, or near direct heat sources, as this can damage the materials.